Pipe end forming machine

Abstract

The utility model provides a pipe end forming machine which comprises a machine frame, a pipe fitting clamping device, a plurality of forming devices and a feeding device, a feeding frame is arranged on one side of the pipe fitting clamping device, a discharging frame is arranged on the other side of the pipe fitting clamping device, and the pipe fitting clamping device is provided with a plurality of clamping stations. The multiple forming devices correspond to the multiple clamping stations one to one, and each forming device is provided with a mold head; the feeding device is provided with two feeding plates, and the feeding plates can vertically swing so that the pipe fittings can be conveyed among the feeding frame, the clamping stations and the discharging frame in sequence. According to the pipe end forming machine, the feeding frame and the discharging frame are arranged and matched with the two feeding plates to achieve automatic feeding and discharging, the forming devices can conduct corresponding pipe end forming on pipe fittings located on the clamping stations at the same time through the die heads of the forming devices, even if the shapes of the ends of the pipe fittings are complex, the pipe fittings can be rapidly machined in place, and the pipe end forming efficiency is improved. And the processing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal pipe forming and processing, and in particular relates to a pipe end forming machine. Background Art

[0002] When processing metal pipe fittings, the pipe fittings are usually cut into specific lengths first, and then the pipe end forming machines are used to process the pipe end into the required shape to meet the docking requirements of the pipe fittings. The pipe end forming machine is a device that processes and shapes the end faces of pipe fittings under normal conditions. It uses different molds to perform expansion, shrinking, upsetting and shrinking operations on the pipe ends. It is widely used in the processing and forming of pipe fitting connections, automobile oil pipes, water pipes, air conditioning pipes and other connection parts.

[0003] For some more complex pipe end shapes, one set of molds cannot complete the job, and multiple sets of molds need to be replaced to form them in sequence. Existing pipe end forming machines require manual loading and unloading, and the machine needs to be shut down to replace the molds, which is not only labor-intensive but also has low production efficiency. There are also some pipe end forming machines that arrange multiple forming molds on the mold mounting seat in sequence, move the mold mounting seat, and make each forming mold cooperate with the pipe to be processed in sequence. Although the above method saves the mold replacement operation and makes the pipe end forming quickly, it still uses manual loading and unloading, and when the pipe to be processed cooperates with the corresponding mold to form, other molds will also move synchronously, resulting in a certain amount of energy waste. Utility Model Content

[0004] The embodiment of the utility model provides a pipe end forming machine, which can realize automatic loading and unloading of pipe fittings, and can make multiple die heads cooperate with the pipe fittings on the corresponding clamping stations to form at the same time, thereby greatly improving the processing efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a pipe end forming machine, including a frame, a pipe clamping device, a plurality of forming devices and a feeding device, the pipe clamping device is arranged on the top of the frame, one side of the pipe clamping device is provided with a feeding rack for supplying pipes, and the other side is provided with a discharge rack for receiving pipes, the pipe clamping device has a plurality of clamping stations arranged at intervals along the pipe conveying direction; a plurality of forming devices are arranged in a one-to-one correspondence with a plurality of clamping stations, and the forming device has a mold head that slides and pushes toward one side of the pipe clamping device; the feeding device is connected to the frame, and the feeding device has two feeding plates that are respectively arranged parallel to the pipe conveying direction, the feeding plates can swing vertically and be supported under the pipe, so that the pipe can be transported in sequence between the feeding rack, each clamping station and the discharge rack.

[0006] As another embodiment of the utility model, a mounting frame is connected to the top of the frame, and the pipe clamping device includes a lower clamping block fixed on the top of the frame and an upper clamping block slidably connected to the mounting frame along the up and down directions. The lower clamping block is provided with a plurality of lower die seats, and the plurality of lower die seats are arranged at intervals along the conveying direction of the pipe. The upper clamping block is provided with a plurality of upper die seats which are arranged one by one corresponding to the lower die seats, and a clamping station is formed between the upper die seat and the lower die seat, and two loading plates are respectively located on both sides of the lower clamping block.

[0007] As another embodiment of the utility model, the mounting frame is connected with two groups of material stopping parts which are respectively located on both sides of the upper clamping block. The material stopping parts include two vertical poles which are respectively connected to the mounting frame in the up and down directions and a material stopping cross bar which is connected to the lower ends of the two vertical poles. The material stopping cross bar can prevent the pipe fittings from moving up with the upper mold base when the upper clamping block moves up.

[0008] As another embodiment of the utility model, the vertical pole is arranged to penetrate the top plate of the mounting frame upwards, and the outer periphery of the vertical pole is threadedly connected to two adjusting nuts, which respectively abut against the upper and lower sides of the top plate of the mounting frame.

[0009] As another embodiment of the utility model, the feeding rack includes a base plate connected to the frame and two side baffles respectively connected to both sides of the base plate. The end of the base plate close to the pipe clamping device is gradually inclined downward. The end of the base plate close to the pipe clamping device is connected to a limiting end plate for limiting the pipe. The limiting end plate is located between the two side baffles and is arranged at an angle to the base plate. The base plate and the limiting end plate are provided with avoidance cavities that are interconnected to avoid the loading plate.

[0010] As another embodiment of the utility model, the discharge rack includes two discharge plates respectively connected to the top wall of the frame, the two discharge plates are located one by one on the outside of the two loading plates, and a space for receiving pipes is formed between the two discharge plates. From one end close to the pipe clamping device to the end away from the pipe clamping device, the discharge plate gradually tilts downward.

[0011] As another embodiment of the utility model, the feeding device includes a rotating driving member connected to the frame, a reducer connected to the rotating driving member, and a swing frame connected to the side of the reducer. The reducer has two output ends, and the two output ends are respectively connected to the swing frame through a rotating arm to drive the swing frame to swing vertically. The two feeding plates are respectively connected to the swing frame, and the top wall of the frame is provided with two through grooves for the feeding plates to pass upward.

[0012] As another embodiment of the utility model, the molding device includes a first support, a tightening drive member and a mold mounting seat, the first support is connected to the top wall of the frame, the tightening drive member is connected to the first support, the mold mounting seat is connected to the driving end of the tightening drive member, the mold head is connected to the side of the mold mounting seat away from the tightening drive member, a slider extending along the axial direction of the tightening drive member is connected to the frame, and a sliding groove that slides with the slider is provided at the bottom of the mold mounting seat.

[0013] As another embodiment of the utility model, a plurality of positioning devices and / or a plurality of forming devices are provided on the side of the pipe clamping device away from the forming device, and the positioning device has a positioning block arranged toward the clamping station and used to limit the axial position of the pipe.

[0014] As another embodiment of the utility model, the positioning device includes a second support connected to the frame, a screw rod rotatably connected to the second support, and two positioning nuts respectively threadedly connected to the outer periphery of the screw rod, the two positioning nuts respectively abut against two sides of the second support, the screw rod extends in a direction perpendicular to the conveying direction of the pipe fitting, the positioning block is connected to the inner end of the screw rod, and the outer end of the screw rod is connected to a handwheel.

[0015] The beneficial effect of the tube end forming machine provided by the utility model is that: compared with the prior art, the tube end forming machine of the utility model, by respectively arranging a feeding rack and a discharging rack on both sides of the tube clamping device, and using the vertical swing of the loading plate to transport the tubes on the feeding rack to the clamping station, each forming device simultaneously performs corresponding tube end forming on the tubes located at each clamping station through its own mold head, and then transports the tubes on the clamping station to the discharging rack through the loading plate. The above-mentioned setting not only realizes the automatic loading and unloading of tubes, but also enables multiple mold heads to cooperate with the tubes on the corresponding clamping stations to form at the same time. The tubes can complete the end forming processing of different processes during the transportation process, and even if the shape of the tube end is relatively complex, it can be quickly processed into place, which greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a tube end forming machine provided in an embodiment of the utility model;

[0018] Figure 2 A schematic structural diagram of a tube end forming machine from another angle provided in an embodiment of the utility model;

[0019] Figure 3 A partial cross-sectional structural schematic diagram of a tube end forming machine provided in an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the structure of a feeding rack provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the top view of the feeding device provided in an embodiment of the utility model;

[0022] Figure 6 This is a front structural schematic diagram of a feeding device provided in an embodiment of the utility model.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Frame; 11. Mounting frame; 12. Through slot; 13. First support; 14. Sliding block; 15. Second support; 2. Feeding frame; 21. Bottom plate; 211. Avoidance cavity; 22. Side baffle; 221. Upper baffle; 23. Limiting end plate; 3. Discharging frame; 31. Discharging plate; 311. Side plate; 4. Pipe clamping device; 41. Upper clamping block; 411. Upper die seat; 42. Lower clamping block; 421. Lower die seat; 43. Lifting drive member; 44. Guide slide bar; 5. Forming device; 51. Mold head; 52. Tightening drive member; 53. Mold mounting seat; 6. Feeding device; 61. Feeding plate; 611. V-shaped bracket; 62. Rotating drive member; 63. Reducer; 64. Swing frame; 65. Rotating arm; 7. Baffle member; 71. Vertical pole; 72. Baffle cross bar; 73. Adjusting nut; 8. Positioning device; 81. Positioning block; 82. Screw rod; 83. Positioning nut; 84. Handwheel; 10. Pipe fittings. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on another element or indirectly on another element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meanings of "multiple" and "several" are two or more, unless otherwise clearly and specifically defined.

[0027] Please also read Figures 1 to 6 The pipe end forming machine provided by the utility model is now described. The pipe end forming machine comprises a frame 1, a pipe clamping device 4, a plurality of forming devices 5 and a feeding device 6. The pipe clamping device 4 is arranged on the top of the frame 1. A feeding rack 2 for feeding pipes is provided on one side of the pipe clamping device 4, and a discharging rack 3 for receiving pipes is provided on the other side. The pipe clamping device 4 has a plurality of clamping stations arranged at intervals along the conveying direction of the pipe 10; the plurality of forming devices 5 are arranged one by one corresponding to the plurality of clamping stations, and the forming device 5 has a die head 51 that slides and pushes toward one side of the pipe clamping device 4; the feeding device 6 is connected to the frame 1, and the feeding device 6 has two feeding plates 61 respectively arranged parallel to the conveying direction of the pipe, and the feeding plates 61 can swing vertically and be supported under the pipe 10, so that the pipe 10 can be transported between the feeding rack 2, each clamping station and the discharging rack 3 in sequence.

[0028] Compared with the prior art, the pipe end forming machine provided in this embodiment provides a feeding rack 2 and a discharging rack 3 on both sides of the pipe clamping device 4, and uses the vertical swing of the loading plate 61 to transport the pipe 10 on the feeding rack 2 to the clamping station. Each forming device 5 simultaneously performs corresponding pipe end forming on the pipe 10 located at each clamping station through its own die head 51, and then transports the pipe 10 on the clamping station to the discharging rack 3 through the loading plate 61. The above arrangement not only realizes the automatic loading and unloading of the pipe 10, but also enables multiple die heads 51 to cooperate with the pipe 10 on the corresponding clamping station to form at the same time. The pipe 10 can complete the end forming processing of different processes during the transportation process, and even if the shape of the end of the pipe 10 is relatively complex, it can be quickly processed in place, which greatly improves the processing efficiency.

[0029] In this embodiment, there are three clamping stations. For the convenience of description, the three clamping stations are named as the first clamping station, the second clamping station and the third clamping station in sequence from the side of the feed rack 2. Before the tube end forming machine is started, the pipe fittings 10 are stacked on the feed rack 2 in sequence. The pipe fittings 10 on the feed rack 2 are named as the first pipe fitting, the second pipe fitting, the third pipe fitting, etc. in sequence from the end close to the pipe fitting clamping device 4. There are three forming devices 5 corresponding to the clamping stations. The three forming devices 5 are named as the first forming device, the second forming device and the third forming device in sequence from the side of the feed rack 2. The tube end forming machine is started, and the loading plate 61 swings upward to lift and support the first tube on the feeding rack 2, and then the loading plate 61 swings downward clockwise to drop the first tube to the first clamping station, and the first forming device is started so that its die head 51 cooperates with the end of the first tube to form the first process; thereafter, the loading plate 61 continues to swing clockwise to transport the first tube on the first clamping station to the second clamping station, and at the same time transports the second tube on the feeding rack 2 to the first clamping station. At this time, the second forming device forms the end of the first tube on the second clamping station to complete the second process, and at the same time, the first forming device The first step is to process the second pipe fitting located at the first clamping station; the loading plate 61 continues to swing, and the first pipe fitting located at the second clamping station is transported to the third clamping station, and the second pipe fitting located at the first clamping station is transported to the second clamping station, and the third pipe fitting on the feeding rack 2 is transported to the first clamping station. At this time, the third forming device performs the third step of end forming on the first pipe fitting at the third clamping station, and the second forming device performs the second step of processing on the second pipe fitting located at the second clamping station. At the same time, the first forming device performs the first step of processing on the third pipe fitting located at the first clamping station. At this point, the end forming of the first pipe fitting is completed. As the loading plate 61 continues to swing, the first pipe fitting is transported to the discharging rack 3 for discharging, and the second pipe fitting, the third pipe fitting and the subsequent pipe fittings are processed and discharged in sequence. It can be seen from the above process that the pipe end forming machine provided in this embodiment can simultaneously perform forming processing on the three pipe fittings 10 at the three clamping stations, which greatly improves the processing efficiency.

[0030] Specifically, the top surface of the loading plate 61 is provided with four V-shaped brackets 611 arranged at intervals along the conveying direction of the pipe 10, and the four V-shaped brackets 611 are respectively used to correspond to the pipes 10 on the feeding rack 2 and the pipes 10 on the three clamping stations. The arrangement of the V-shaped brackets 611 ensures the stability of the conveying process of the pipe 10.

[0031] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 1A mounting frame 11 is connected to the top of the frame 1, and the pipe clamping device 4 includes a lower clamping block 42 fixed on the top of the frame 1 and an upper clamping block 41 slidably connected to the mounting frame 11 along the up-down direction. A plurality of lower die seats 421 are arranged on the lower clamping block 42, and the plurality of lower die seats 421 are arranged at intervals along the conveying direction of the pipe 10. A plurality of upper die seats 411 corresponding to the lower die seats 421 are arranged on the upper clamping block 41, and a clamping station is formed between the upper die seat 411 and the lower die seat 421, and two loading plates 61 are respectively located on both sides of the lower clamping block 42.

[0032] In this embodiment, grooves are respectively provided on the upper clamping block 41 and the lower clamping block 42, and the upper die seat 411 or the lower die seat 421 is respectively provided in the grooves. The pipe end forming machine can be equipped with a plurality of upper die seats 411 and lower die seats 421 of different types and sizes, so that the pipe end forming machine can adapt to the end forming processing of pipe fittings 10 of different types and sizes.

[0033] The lower die seat 421 is fixedly arranged on the lower clamping block 42, and its position remains fixed to cooperate with the loading plate 61 to receive the pipe 10. The upper die seat 411 can move up and down with the upper clamping block 41, to cooperate with the lower die seat 421 downward to form a clamping station to clamp the pipe 10, or to separate from the lower die seat 421 upward to provide space for the transportation of the pipe 10.

[0034] The two loading plates 61 are respectively located on both sides of the lower clamping block 42 , so that the two loading plates 61 can be supported on both ends of the pipe fitting 10 at the same time, ensuring the smooth transportation of the pipe fitting 10 .

[0035] Specifically, the mounting frame 11 includes four columns respectively connected to the frame 1 and extending upward, and a top plate connected to the upper ends of the four columns. A lifting drive member 43 is connected to the top of the top plate, and the lifting end of the lifting drive member 43 passes through the top plate downward and is connected to the upper clamping block 41 to drive the upper clamping block 41 to move up and down. The upper clamping block 41 is also connected to two guide slide bars 44 respectively extending upward, and the guide slide bars 44 are slidably connected to the top plate to provide a guide for the upper clamping block 41 to move up and down. The lifting drive member 43 can adopt a hydraulic cylinder or a cylinder structure.

[0036] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 2 and Figure 3 The mounting frame 11 is connected with two sets of material-blocking members 7 respectively located on both sides of the upper clamping block 41. The material-blocking members 7 include two vertical rods 71 ​​respectively connected to the mounting frame 11 in the up-down direction and a material-blocking cross bar 72 connected to the lower ends of the two vertical rods 71. The material-blocking cross bar 72 can prevent the pipe fitting 10 from following the upper die base 411 to move up when the upper clamping block 41 moves up.

[0037] In this embodiment, when the clamping force of the upper die seat 411 and the lower die seat 421 on the pipe fitting 10 is relatively large, the pipe fitting 10 will be stuck in the upper die seat 411 or the lower die seat 421. When the pipe fitting 10 is stuck in the lower die seat 421, the vertical swing of the loading plate 61 will lift the pipe fitting 10 upward to separate it from the lower die seat 421. When the pipe fitting 10 is stuck in the upper die seat 411, the material blocking cross bar 72 will resist the pipe fitting 10 and limit its further upward movement as the upper die seat 411 moves upward, thereby separating it from the upper die seat 411 and falling back into the lower die seat 421.

[0038] Specifically, the height of the material blocking cross bar 72 is set as close to the lower die seat 421 as possible without affecting the loading of the pipe fitting 10, so as to separate the pipe fitting 10 from the upper die seat 411 and fall back into the lower die seat 421 as soon as possible, thereby avoiding the pipe fitting 10 from rebounding when falling back after being lifted too high.

[0039] A group of stoppers 7 are provided on both sides of the upper clamping block 41 to simultaneously apply a stop force to both ends of the pipe fitting 10 to ensure that the pipe fitting 10 is effectively separated from the upper die seat 411 and falls smoothly back into the lower die seat 421 .

[0040] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 3 The vertical rod 71 is arranged to penetrate the top plate of the mounting frame 11 upwardly, and the outer periphery of the vertical rod 71 is threadedly connected to two adjusting nuts 73, and the two adjusting nuts 73 respectively abut against the upper and lower sides of the top plate of the mounting frame 11.

[0041] In this embodiment, there is a clearance fit between the vertical rod 71 and the top plate of the mounting frame 11, which facilitates the installation and removal of the material stopper 7. Furthermore, through two adjusting nuts 73 threadedly matched with the vertical rod 71, the installation height of the vertical rod 71 can be adjusted, and then the installation height of the material stopper cross bar 72 can be adjusted, so that the material stopper 7 can flexibly adapt to the actual use scenario of the tube end forming machine.

[0042] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 3 and Figure 4 The feeding rack 2 includes a bottom plate 21 connected to the frame 1 and two side baffles 22 respectively connected to both sides of the bottom plate 21. The end of the bottom plate 21 close to the pipe clamping device 4 is gradually inclined downward. The end of the bottom plate 21 close to the pipe clamping device 4 is connected to a limiting end plate 23 for limiting the pipe 10. The limiting end plate 23 is located between the two side baffles 22 and is set at an angle to the bottom plate 21. The bottom plate 21 and the limiting end plate 23 are provided with an avoidance cavity 211 that is interconnected to avoid the loading plate 61.

[0043] In this embodiment, the inclined setting of the bottom plate 21 can make the pipe fitting 10 automatically roll toward the end close to the pipe fitting clamping device 4 until it abuts against the inner side of the limiting end plate 23, so that the loading plate 61 can pass upward through the avoidance cavity 211 to lift the pipe fitting 10 at the lower end and transport the pipe fitting 10 to the side of the pipe fitting clamping device 4 through the avoidance cavity 211.

[0044] Specifically, the distance between the two side baffles 22 is adapted to the length of the pipe 10, which ensures the stability of the pipe 10 when rolling down, and plays an axial positioning role for the pipe 10. Furthermore, the upper edge of the side baffle 22 has an upper baffle 221, which further ensures that the pipe 10 can roll down in an orderly manner.

[0045] More specifically, there is a gap between the inner end of the upper baffle 221 and the limiting end plate 23 for a pipe 10 to pass through, and the height of the limiting end plate 23 is smaller than the diameter of the pipe 10, ensuring that the loading plate 61 can smoothly bring out the pipe 10 while ensuring that the next pipe 10 will not be lifted up.

[0046] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 1 The discharge rack 3 includes two discharge plates 31 respectively connected to the top wall of the frame 1. The two discharge plates 31 are located on the outer sides of the two loading plates 61 in a one-to-one correspondence. A space for receiving the pipe 10 is formed between the two discharge plates 31. From one end close to the pipe clamping device 4 to the end far away from the pipe clamping device 4, the discharge plate 31 gradually tilts downward.

[0047] In this embodiment, the inclined setting of the discharge plate 31 can make the pipe fittings 10 supplied by the loading plate 61 automatically roll outward and downward, which is convenient for the subsequent recovery of the pipe fittings 10. Specifically, the bottom of the discharge plate 31 is connected to the frame 1 by bolts, and the bottom of the discharge plate 31 is provided with a long hole for the bolt to pass through. In actual use, the distance between the two discharge plates 31 can be adjusted by the cooperation of the bolts and the long hole to adapt to the support of pipe fittings 10 of different lengths.

[0048] Furthermore, the upper edge of the discharge plate 31 is connected with an upwardly extending side plate 311, which can limit the axial displacement of the pipe 10 when rolling down, ensuring the smooth discharge of the pipe 10. Furthermore, the side plate 311 can be made of a rubber plate to prevent the formed end from being worn.

[0049] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 3 , Figure 5 and Figure 6The feeding device 6 includes a rotating driving member 62 connected to the frame 1, a reducer 63 connected to the rotating driving member 62, and a swing frame 64 connected to the side of the reducer 63. The reducer 63 has two output ends, and the two output ends are respectively connected to the swing frame 64 through a rotating arm 65 to drive the swing frame 64 to swing vertically. The two feeding plates 61 are respectively connected to the swing frame 64, and the top wall of the frame 1 is provided with two through grooves 12 for the feeding plates 61 to pass upward.

[0050] In this embodiment, the rotary drive member 62 adopts a three-phase asynchronous motor, and the rotary drive member 62 is connected to a reducer 63. The reducer 63 has two output ends extending to the same side, and the two output ends rotate in the same direction. The output end is connected to the inner end of the rotary arm 65, and the outer end of the rotary arm 65 is rotatably connected to the bottom of the swing frame 64. The synchronous and unidirectional rotation of the two rotary arms 65 can drive the swing frame 64 to perform rotational translational motion in the vertical direction, thereby realizing the vertical swing of the loading plate 61.

[0051] Specifically, the rotary drive member 62, the reducer 63 and the swing frame 64 are all arranged inside the frame 1, and through slots 12 are respectively provided on the top wall of the frame 1 at positions corresponding to the two loading plates 61, so that the loading plates 61 can vertically swing in the through slots 12 to complete the loading action. The two through slots 12 are respectively located on both sides of the lower clamping block 42, so that the two loading plates 61 respectively support the tube 10 from both ends of the tube 10.

[0052] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 1 The molding device 5 includes a first support 13, a tightening driving member 52 and a mold mounting seat 53. The first support 13 is connected to the top wall of the frame 1, the tightening driving member 52 is connected to the first support 13, the mold mounting seat 53 is connected to the driving end of the tightening driving member 52, and the mold head 51 is connected to the side of the mold mounting seat 53 away from the tightening driving member 52. A slider 14 extending along the axial direction of the tightening driving member 52 is connected to the frame 1, and a slide groove slidably matched with the slider 14 is provided at the bottom of the mold mounting seat 53.

[0053] In this embodiment, each forming device 5 is equipped with a tightening driving member 52, and its die head 51 can be set according to the needs of each forming process of the end of the pipe 10, so as to complete different forming processes at different clamping stations. Of course, if the shape of the end of the pipe 10 is relatively simple, the unnecessary forming device 5 can be disabled, and only the corresponding forming device 5 can be started, which improves the flexibility of the use of the pipe end forming machine.

[0054] The jacking drive member 52 can be one of a hydraulic cylinder and a pneumatic cylinder, and the die head 51 is installed on the driving end of the jacking drive member 52 through the die mounting seat 53. In order to ensure the stable jacking of the die head 51, a slider 14 is set on the frame 1, and the die mounting seat 53 is slidably connected to the slider 14 through a slide groove. As the driving end of the jacking drive member 52 extends, the die mounting seat 53 drives the die head 51 to jack the pipe fitting 10 on the clamping station along the slider 14, ensuring the coaxial arrangement of the die head 51 and the pipe fitting 10, thereby ensuring the molding quality of the pipe end. Specifically, a dovetail groove matching structure can be adopted between the slider 14 and the slide groove to make the sliding process of the die mounting seat 53 more stable.

[0055] Specifically, each clamping drive member 52 is connected to the frame 1 through a first support 13. In order to reduce the overall length of the tube end forming machine, the distance between the clamping stations can be reduced as much as possible, and the distance between the forming devices 5 can also be reduced synchronously. At this time, the first supports 13 can be connected as an integral whole, thereby simplifying the installation operation of the forming device 5.

[0056] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 2 A plurality of positioning devices 8 and / or a plurality of forming devices 5 are provided on the side of the pipe clamping device 4 away from the forming device 5 . The positioning device 8 has a positioning block 81 which is arranged toward the clamping station and is used to limit the axial position of the pipe 10 .

[0057] In this embodiment, when the molding device 5 cooperates with one end of the pipe 10 for molding, the axial movement of the pipe 10 may be caused due to the pushing of the die head 51. To avoid the above situation, a positioning device 8 can be provided at the other end of the pipe 10, and a positioning block 81 on the positioning device 8 abuts against the other end of the pipe 10 to limit the axial position of the pipe 10, thereby ensuring the molding quality of the pipe 10.

[0058] When the other end of the pipe fitting 10 also needs to be formed, a corresponding forming device 5 can be set at the other end of the pipe fitting 10. When the pipe fitting 10 is fixed on the clamping station, the forming devices 5 at both ends operate simultaneously, which can not only ensure that the axial position of the pipe fitting 10 will not be offset, but also cooperate to form the two ends of the pipe fitting 10 at the same time, thereby expanding the use scenario of the pipe end forming machine.

[0059] As a specific embodiment of the pipe end forming machine provided by the utility model, see Figure 2The positioning device 8 includes a second support 15 connected to the frame 1, a screw rod 82 rotatably connected to the second support 15, and two positioning nuts 83 respectively threadedly connected to the outer periphery of the screw rod 82. The two positioning nuts 83 are respectively abutted on both sides of the second support 15. The screw rod 82 extends in a direction perpendicular to the conveying direction of the pipe fitting 10. The positioning block 81 is connected to the inner end of the screw rod 82, and the outer end of the screw rod 82 is connected to a hand wheel 84.

[0060] In this embodiment, the distance between the positioning block 81 and the pipe clamping device 4 can be adjusted by rotating the screw 82, so that the positioning device 8 can adapt to the end positioning of pipes 10 of different lengths. Specifically, the screw 82 is threadedly connected to the second support 15, and its axial position is locked by two positioning nuts 83. When the position of the positioning block 81 needs to be adjusted, first loosen the two positioning nuts 83, and then turn the hand wheel 84 to adjust the axial position of the positioning block 81. When the positioning block 81 is adjusted to a suitable position, rotate the two positioning nuts 83 so that the two positioning nuts 83 respectively abut against the two side walls of the second support 15 to lock the position of the screw 82.

[0061] Furthermore, the positioning block 81 may be a rubber block to avoid abrasion to the end of the pipe 10 .

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Tube end forming machine, characterized in that: include: frame; A pipe clamping device is arranged on the top of the frame, one side of the pipe clamping device is provided with a feeding rack for feeding pipes, and the other side is provided with a discharging rack for receiving pipes, and the pipe clamping device has a plurality of clamping stations arranged at intervals along the pipe conveying direction; A plurality of molding devices are arranged corresponding to the plurality of clamping stations, and the molding devices have a mold head that slides and pushes toward one side of the pipe clamping device; and A loading device is connected to the frame, and the loading device has two loading plates respectively arranged parallel to the conveying direction of the pipe fittings. The loading plates can swing vertically and be supported under the pipe fittings so that the pipe fittings can be transported in sequence between the feeding rack, each of the clamping stations and the discharging rack.

2. The tube end forming machine according to claim 1, characterized in that: A mounting frame is connected to the top of the frame, and the pipe clamping device includes a lower clamping block fixed above the frame and an upper clamping block slidably connected to the mounting frame along the up and down directions. The lower clamping block is provided with a plurality of lower die seats, and the plurality of lower die seats are arranged at intervals along the conveying direction of the pipe. The upper clamping block is provided with a plurality of upper die seats corresponding to the lower die seats one by one, and the clamping station is formed between the upper die seat and the lower die seat, and the two loading plates are respectively located on both sides of the lower clamping block.

3. The tube end forming machine according to claim 2, characterized in that: The mounting frame is connected to two groups of material stopping parts respectively located on both sides of the upper clamping block. The material stopping parts include two vertical poles respectively connected to the mounting frame in the up and down directions and a material stopping cross bar connected to the lower ends of the two vertical poles. The material stopping cross bar can prevent the pipe fitting from following the upper mold base to move up when the upper clamping block moves up.

4. The tube end forming machine according to claim 3, characterized in that: The vertical rod is arranged to penetrate the top plate of the mounting frame upwards, and the outer periphery of the vertical rod is threadedly connected with two adjusting nuts, and the two adjusting nuts respectively abut against the upper and lower sides of the top plate of the mounting frame.

5. The tube end forming machine according to claim 1, characterized in that: The feeding rack includes a base plate connected to the frame and two side baffles respectively connected to both sides of the base plate. The end of the base plate close to the pipe clamping device is gradually inclined downward. The end of the base plate close to the pipe clamping device is connected to a limiting end plate for limiting the pipe. The limiting end plate is located between the two side baffles and is set at an angle to the base plate. The base plate and the limiting end plate are provided with avoidance cavities that are interconnected to avoid the loading plate.

6. The tube end forming machine according to claim 1, characterized in that: The discharging rack includes two discharging plates respectively connected to the top wall of the frame, and the two discharging plates are located one by one on the outside of the two loading plates. A space for receiving pipes is formed between the two discharging plates, and the discharging plates gradually tilt downward from one end close to the pipe clamping device to the end away from the pipe clamping device.

7. The tube end forming machine according to claim 1, characterized in that: The feeding device includes a rotating driving member connected to the frame, a reducer connected to the rotating driving member, and a swing frame connected to the side of the reducer. The reducer has two output ends, and the two output ends are respectively connected to the swing frame through rotating arms to drive the swing frame to swing vertically. The two feeding plates are respectively connected to the swing frames, and the top wall of the frame is provided with two through grooves for the feeding plates to pass upward.

8. The tube end forming machine according to claim 1, characterized in that: The forming device includes a first support, a tightening drive member and a mold mounting seat, the first support is connected to the top wall of the frame, the tightening drive member is connected to the first support, the mold mounting seat is connected to the driving end of the tightening drive member, the mold head is connected to a side of the mold mounting seat away from the tightening drive member, a slider extending along the axial direction of the tightening drive member is connected to the frame, and a slide groove that slidably cooperates with the slider is provided at the bottom of the mold mounting seat.

9. The tube end forming machine according to claim 1, characterized in that: A plurality of positioning devices and / or a plurality of the forming devices are arranged on a side of the pipe clamping device away from the forming device, and the positioning device has a positioning block arranged toward the clamping station and used for limiting the axial position of the pipe.

10. The tube end forming machine according to claim 9, characterized in that: The positioning device includes a second support connected to the frame, a screw rod rotatably connected to the second support, and two positioning nuts respectively threadedly connected to the outer circumference of the screw rod, the two positioning nuts respectively abut against two sides of the second support, the screw rod extends in a direction perpendicular to the conveying direction of the pipe fitting, the positioning block is connected to the inner end of the screw rod, and the outer end of the screw rod is connected to a handwheel.

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